Gold Biscuit Sizes Guide: 1g to 1kg Explained

• Gold biscuits come in a variety of sizes, ranging from 1 gram to 1 kilogram and beyond.
• Smaller quantities are ideal for gifts and first-time buyers, but larger sizes are best suited to serious long-term investors.
• The 10-gram gold biscuit is the most popular choice for buyers in India.
• Indians can now also purchase 1g gold biscuits via online platforms offering digital gold.
• Every gold biscuit sold here has to carry a BIS hallmark and a 6-digit HUID number; that's the rule under BIS Rules, 2018
• Bars and biscuits are taxed at a flat 3% GST (HSN 7108). No job-work charge here, so you skip the extra 5% that jewellery making attracts.

The 1kg gold biscuit is one of the best forms of long-term investments in India. It provides you with a layer of security for your wealth and also helps grow your investment portfolio. Gold is in demand throughout the year in India because of its rich culture, festivals, and wedding seasons. It would be wise on your part to understand how different sizes may impact your investment. Read on to learn some invaluable tips about gold.

So what exactly is a gold biscuit? Simply put, it's a rectangular or flat piece of refined gold; people also call it a gold bar. Most are cast or minted in 24-karat purity (999 or 9999 fineness) at a certified refinery. In India, you'll find them in a fixed set of weights: 1g, 2g, 2.5g, 5g, 8g, 10g, 20g, 50g, 100g, 500g, and 1kg, with 5kg and 10kg kept aside for institutional buyers. Whatever the size, it needs a BIS hallmark, the government-backed mark that confirms the purity stamped on it. There's no design or craftsmanship involved, unlike jewellery, so the value comes almost entirely from its weight and purity.

Also Read: Will Gold Rate Decrease?

Here's the part most guides skip: actual physical size. The table below gives approximate dimensions for minted (stamped) biscuits at each standard weight sold in India. Minted bars run thinner than cast bars of the same weight, since they're pressed rather than poured. Treat the prices as a rough guide only; they shift daily with the gold rate, so check the live rate before you buy.

*Rough numbers, worked out using a 24-karat gold rate of about ₹14,500 per gram (Source: Goodreturns/ClearTax, 23-24 June 2026) plus 3% GST. Your actual bill will depend on the seller's making charge and that day's rate.

A 1-gram gold biscuit is the smallest and the most economical alternative. It is a popular choice for first-time buyers looking to start modestly, as well as for gifting on special occasions such as birthdays and baby showers. These are easy to store, and they are generally available on most jewellery platforms, both online and offline.

The 2-gram gold biscuit is not as widely available as other sizes. It makes for an excellent tiny present and doesn't exceed your budget too much.

The 5-gram gold biscuit is one of the most popular gift sizes in India. It is a considerate and universally received present for any event, including weddings, festivals, and family gatherings. The 5g gold biscuit is widely available across the most trusted brands and platforms.

The 10-gram gold biscuit is also a valuable option in India. It represents the ideal balance of affordability and investment value. Nearly every major brand, including MMTC-PAMP, Tanishq, and Malabar Gold, offers a 10g gold biscuit. Most first-time investors start here.

Picture a 1g biscuit as roughly the size of a fingernail, while a 10g mint bar measures around 31mm x 18mm and is barely a millimetre thick – thinner than two stacked coins. This range is also the easiest to check on the spot, since the BIS hallmark, purity mark, and HUID number are still readable to the naked eye even on such a small surface.

A 20-gram gold biscuit is an excellent choice for those who have a higher budget for their investment. It is commonly available and ideal for buyers looking to increase their gold holdings gradually over time.

The 50-gram gold biscuit marks the beginning of a more serious investment. It offers somewhat better value per gram than smaller amounts. The 50g gold biscuit is a popular choice among investors who buy gold on a regular basis and wish to accumulate more quickly.

The 100-gram gold biscuit is popular among experienced investors and bulk buyers, who rely on reputable brands such as MMTC-PAMP or PAMP Suisse for their investment. The 100g gold biscuit also has a lower dealer premium per gram than the smaller variants.

Think of a 100g bar as roughly the length and width of a credit card, just a lot heavier and thicker. Across this whole range, making charges shrink as a share of total cost. A flat charge of ₹150-₹500 per bar barely registers once the gold value itself runs into the lakhs.

The 500-gram gold biscuit is less prevalent in retail but is accessible from approved bullion dealers. It is ideal for high-value investors looking to store a big amount of actual gold at once. Storage becomes more vital at this level, with bank lockers often providing safe solutions for investors.

The 1 kilogram gold biscuit is the largest standard size offered in India. It is often purchased by institutional investors, corporations, or serious long-term customers and provides the best value per gram. However, it requires careful storage and recordkeeping. Not all retail platforms carry this size, and you may need to contact a licensed bullion dealer directly.

A 5 kg gold biscuit and a 10 kg gold biscuit are non-standard sizes designed for institutional or business customers. These are not available through traditional retail channels and are typically handled by authorised bullion dealers or banks under special arrangements.

A standard 1kg minted bar runs about 80mm long, 40mm wide, and 18mm deep – roughly the size and weight of a large smartphone. The per-gram premium over spot price is lowest at this size, but you trade that off against liquidity. Reselling a 1kg bar almost always means going to a bullion dealer directly.

There are two purity grades you'll come across: 999 fineness (99.9% pure, 24-karat) and 9999 fineness (99.99% pure). According to the Bureau of Indian Standards (bis.gov.in), only BIS-licensed refineries can hallmark gold bullion or coins of 999/995 fineness; there were 46 such refineries operating as of 31 July 2023.

Since April 1, 2023, BIS won't let anyone sell hallmarked gold without a six-digit alphanumeric HUID (Hallmark Unique Identification) number stamped on it.

A genuine bar will show three marks: the BIS logo, the purity grade (say, 999), and the HUID. Want to check before you buy? Download the BIS Care app (it's free on both Android and iOS) and look up the HUID under 'Verify HUID'; it pulls up the registered jeweller or refinery, the purity grade, and the assaying centre on file.

First, the gold value is calculated by multiplying the weight by the day's rate per gram. Second, there is a making charge, which is usually a flat ₹150-₹500 for smaller bars rather than a percentage, since there is no design work to pay for. Third, GST at 3% on the total, under HSN code 7108 (Source: CBIC GST rate schedule; cleartax.in). One thing worth knowing: bars don't carry the extra 5% making-charge GST that applies to jewellery job work.

Worked example: 10g gold biscuit:

• Gold value: 10g × ₹14,500/g (24K rate, 23–24 June 2026, Source: Goodreturns) = ₹1,45,000
• Making charge (flat, illustrative): ₹250
• Subtotal: ₹1,45,250
• 3% GST: ₹4,358
• Approximate total: ₹1,49,608

Notice how the flat-making charge barely moves between sizes? That's precisely why it shrinks as a share of the bill on larger bars; on a 1g biscuit it might eat up 1-2% of the cost, but on a 100g bar it's a rounding error. The GST rate stays fixed either way; it's the making charge that works here.

Which Size Is Right for You?

Another way to think about it is what you're actually trying to do:

• Gift buyer ; 1g to 5g, roughly ₹14,000–₹76,000; widely available and easy to wrap or hand over.
• First-time investor ; 5g to 10g, roughly ₹76,000–₹152,000; balances affordability with a lower making-charge ratio.
• Regular investor; 20g to 100g, roughly ₹3,04,000–₹15,20,000; better cost efficiency and easier resale liquidity than larger bars.
• Long-term wealth storage: 500g to 1kg, roughly ₹76,00,000 and above; lowest premium over spot price, but needs secure storage and is harder to resell quickly.

One thing to watch out for: Bigger isn't automatically the smarter buy. Yes, a 500g or 1kg bar costs less per gram, but try selling one in a hurry, and you'll feel the difference; plus, you'll need a bank locker just to keep it safe. For most individual buyers, the 10g-100g range is the best balance between cost and convenience.

• Certified jewellers: Easiest to access, widest range of sizes. Just confirm their BIS registration online before you commit.
• Bank branches: A handful of public and private banks sell certified bars, though usually only in a few set sizes.
• Government-backed bullion dealers; this is where you'll need to go for 500g, 1kg, or anything institutional.
• Digital gold platforms: buy gold backed by real bars (often from MMTC-PAMP) starting at 1g; no store visit needed.

Before you pay, check the BIS hallmark, the HUID number (verify it on BIS Care), the weight stamp, and the purity mark, and get a signed receipt or certificate. Hold onto that certificate; it makes a real difference to what you'll get back when you resell.

For anything above 50g, a bank locker is the safest option, even with the annual fee. Smaller, gift-sized bars can fit well in a home safe, and third-party vault services offer a middle ground if you want security without tying it to a bank account.

Don't break the tamper-evident packaging unless you have to; a scratched bar or broken seal can knock down what a dealer offers you later. Bars sold with their original invoice and packaging intact almost always fetch more than loose, undocumented gold.

Not keen on managing physical storage at all? Sovereign Gold Bonds and gold mutual funds are paper alternatives worth a look; Aditya Birla Capital has separate guides on gold investment options if you want to compare.

India is one of the largest gold-consuming countries in the world. From a 1kg gold biscuit to a 5kg gold biscuit, citizens don't shy away from making huge investments when it comes to gold. Keeping a check on the sizes, BIS hallmarks, and certifications is important before making a purchase decision for the future.

Short sizes may benefit beginners and larger ones suit long-term investors. Aditya Birla Capital is one of the most trustworthy platforms to invest in digital gold. Check out their website and platform for information on gold biscuits and more.

Also Read: 1 Bhori Gold in Grams - Conversion, Price & Buying Guide?